"Officers were advised by a family friend that Lawrie was last seen on August 18, 2011 at approximately 11:50 pm.

"Investigators located Grazyna Lawrie lying in her bed unresponsive. Lawrie was pronounced deceased on the scene.

"At this time, no obvious signs of foul play have been indicated. The preliminary investigation does indicate that this death appears to be self-inflicted.

"This is an ongoing death investigation pending the outcome of the Medical Examiner's findings."It is said to have been Ms Lawrie's sixth visit to the city, which is home to Presley's Graceland mansion.

A Facebook page has been set up "in loving memory and honour" of Ms Lawrie.

It describes her as "a fabulous Elvis fan and a breath of fresh air".

The page says Ms Lawrie has one son, and organiser Caroline Pratt said there are already plans to honour Ms Lawrie in Memphis in January next year, during events celebrating Presley's birthday.

A Foreign Office spokesman said: "We are aware of the death of a British national in Memphis, Tennessee and we are providing consular assistance to the family at this distressing time."